{mosimage}Artist Casey Coller has posted the lines-only version to his variant of All Hail Megatron #15 with Perceptor posing in Leonardo da Vinci's famous "Vitruvian Man" pose! Casey has also posted up the rough concept for the cover as well! AHM #15 hits shelves September 16.

EDIT: Joana Lafuente has posted up the virgin cover with her colors up as well!